On Pearl Street, Centro's patio offers a dual inside-outside bar, high cocktail tables and great people watching. Available year round, with their tent-like cover and heat lamps, you can enjoy the patio any time of the year alongside Cuba libres, margaritas and their Latin inspired cuisine.

With a direct view of the flatirons, and a three-drink maximum with their notoriously strong margaritas, happy-hour goers flock to the roof in the warm months. With a newly added bar on the rooftop, you don't have to wait too long for your top off and there are misters in the summer to keep you cool.

Directly next door to The Rio, Absinthe's rooftop patio has great mountain views and offers comfortable seating and a giant jenga set. With your own bar atop the patio, you can order from them all night long or enjoy the European bistro food, with over 40 beers from around the world, and the largest selection of absinthe in America.

Tucked behind the restaurant, The Mediterranean's patio is sheltered from the busy streets and makes you feel like you're somewhere in Italy with its bubbling fountain. Open for more than 20 years, you can expect to find Mediterranean inspired tapas alongside wines and cocktails. Don't miss their tapas hour, which is daily from 3 p.m. to 6 p.m.

West End Tavern has two patio spaces; one outside on Pearl Street with just a few tables, and another on their roof space with inside and outside access, views of the flatirons, and a covered area for winter months. Whether you're dining there for lunch or dinner, or in the upstairs bar patio for happy hour, it's a great space for enjoying a sports game, indulging in their extensive whiskey selection or enjoying their smoked barbeque.

The Chautauqua Dining Hall has been open since 1898, offering flatiron views from their iconic wraparound porch. Offering classic American breakfast, lunch, dinner, and a full bar you can stop by before or after a hike, a concert in the Chautauqua Auditorium or just for a special evening in the historic building.

A sister restaurant to Mountain Sun, Southern Sun offers a large patio in South Boulder that sits below the Flatirons right off Broadway. Enjoy live music, their house made brews, their full pub menu, and browse through their book shelves filled with novels and board games.

The Bitter Bar has a large patio in front of their restaurant, that's covered with twinkling lights for evening enjoyment. Although they don't have a full menu anymore, you can enjoy one of their craft cocktails and the longest happy hour in Boulder that lasts from 5 p.m. to 8 p.m. daily. If you're hungry, you can grab something from their to-go case in front, or snack on popcorn that's popped daily.